@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&display=swap');

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #06131c;
  --card: #0f2330;
  --card-strong: #143041;
  --text: #ebf6fb;
  --muted: #97afbd;
  --line: #2b4e63;
  --brand: #1fb5cf;
  --brand-2: #ff8a3d;
  --danger: #ff6378;
  --glow: 0 18px 60px rgba(15, 128, 151, 0.34);
}

body[data-theme='light'] {
  --bg: #edf5fb;
  --card: #f8fcff;
  --card-strong: #edf6fc;
  --text: #102e41;
  --muted: #547486;
  --line: #c2d8e7;
  --brand: #167f97;
  --brand-2: #ef8a44;
  --danger: #d94f6a;
  --glow: 0 18px 60px rgba(18, 95, 120, 0.16);
}

body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 18% 10%, rgba(34, 184, 207, 0.16), transparent 36%),
    radial-gradient(circle at 82% 85%, rgba(255, 138, 61, 0.18), transparent 32%),
    linear-gradient(135deg, #071219 0%, #0a1822 35%, #081520 100%);
  color: var(--text);
  font-family: 'Sora', sans-serif;
  padding: 24px;
  overflow: hidden;
}

body[data-theme='light'] {
  background:
    radial-gradient(circle at 18% 10%, rgba(31, 154, 178, 0.16), transparent 36%),
    radial-gradient(circle at 82% 85%, rgba(239, 138, 68, 0.14), transparent 32%),
    linear-gradient(135deg, #edf5fa 0%, #e6f0f7 35%, #f6fafe 100%);
}

.theme-fab {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 4;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 28, 38, 0.9);
  color: var(--text);
  padding: 0 12px;
  font: inherit;
  font-size: 0.76rem;
  font-weight: 700;
  cursor: pointer;
}

body[data-theme='light'] .theme-fab {
  background: rgba(247, 251, 255, 0.96);
}

.auth-layout {
  width: min(1040px, 100%);
  display: grid;
  grid-template-columns: 1.1fr 0.95fr;
  gap: 24px;
  position: relative;
  z-index: 2;
}

.intro-card,
.auth-container {
  border: 1px solid rgba(154, 193, 209, 0.14);
  background: linear-gradient(160deg, rgba(15, 30, 40, 0.92), rgba(11, 25, 34, 0.92));
  border-radius: 24px;
  backdrop-filter: blur(9px);
}

body[data-theme='light'] .intro-card,
body[data-theme='light'] .auth-container {
  background: linear-gradient(160deg, rgba(247, 251, 255, 0.98), rgba(235, 244, 251, 0.98));
  border: 1px solid rgba(170, 196, 212, 0.7);
  box-shadow: 0 14px 44px rgba(102, 142, 160, 0.2);
}

body[data-theme='light'] .brand h2 {
  color: #0f3042;
}

body[data-theme='light'] .brand p {
  color: #4f6776;
}

body[data-theme='light'] label span {
  color: #4f6776;
}

body[data-theme='light'] .tab-btn {
  color: #476273;
}

body[data-theme='light'] .tab-btn.active {
  color: #073243;
}

body[data-theme='light'] input {
  background: #ffffff;
  border-color: #b9d0de;
  color: #123041;
}

body[data-theme='light'] input::placeholder {
  color: #6d8797;
}

.intro-card {
  padding: 42px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 22px;
  box-shadow: var(--glow);
  transform: translateY(14px);
  opacity: 0;
  animation: rise 0.55s ease forwards;
}

.intro-card h1 {
  font-size: clamp(2rem, 2.7vw, 2.9rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.intro-card p {
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.intro-card ul {
  list-style: none;
  display: grid;
  gap: 10px;
}

.intro-card li {
  font-size: 0.95rem;
  color: #d0e3ec;
  padding-left: 18px;
  position: relative;
}

.intro-card li::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
  position: absolute;
  left: 0;
  top: 8px;
}

.intro-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.intro-pills span {
  border: 1px solid rgba(111, 170, 190, 0.38);
  color: #b8d8e6;
  background: rgba(14, 42, 56, 0.56);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.auth-container {
  padding: 34px 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.35);
  transform: translateY(14px);
  opacity: 0;
  animation: rise 0.55s ease forwards 0.08s;
}

.brand {
  display: grid;
  gap: 8px;
}

.brand-dot {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(130deg, var(--brand), var(--brand-2));
  box-shadow: 0 9px 24px rgba(34, 184, 207, 0.4);
}

.brand h2 {
  font-size: 1.44rem;
  letter-spacing: -0.02em;
}

.brand p {
  color: var(--muted);
  font-size: 0.9rem;
}

.tab-bar {
  background: #112532;
  border: 1px solid var(--line);
  border-radius: 14px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  padding: 6px;
}

.tab-btn {
  border: 0;
  background: transparent;
  color: #8cadbc;
  padding: 10px 8px;
  border-radius: 10px;
  font-size: 0.86rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: 0.2s ease;
}

.tab-btn.active {
  background: linear-gradient(120deg, var(--brand), #28a8ca);
  color: #05242f;
}

body[data-theme='light'] .tab-bar {
  background: #eff6fb;
}

.auth-form {
  display: grid;
  gap: 12px;
}

.auth-hidden {
  display: none;
}

label {
  display: grid;
  gap: 6px;
}

label span {
  font-size: 0.77rem;
  color: #95b4c2;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

input {
  height: 46px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #0c1f2c;
  color: var(--text);
  padding: 0 14px;
  font-family: inherit;
  font-size: 0.92rem;
  outline: none;
  transition: 0.2s ease;
}

input::placeholder {
  color: #678190;
}

input:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(34, 184, 207, 0.2);
}

.error-msg {
  min-height: 20px;
  color: var(--danger);
  font-size: 0.82rem;
}

.btn-primary {
  height: 47px;
  border: 0;
  border-radius: 12px;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: linear-gradient(120deg, var(--brand), var(--brand-2));
  color: #082434;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: 0.2s ease;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 10px 30px rgba(34, 184, 207, 0.32);
}

.btn-primary:disabled {
  opacity: 0.64;
  cursor: not-allowed;
}

.btn-loader {
  font-size: 0.84rem;
}

.bg-shape {
  position: fixed;
  border-radius: 999px;
  z-index: 1;
  filter: blur(60px);
  pointer-events: none;
}

.bg-one {
  width: 300px;
  height: 300px;
  background: rgba(34, 184, 207, 0.2);
  left: -80px;
  bottom: -60px;
}

.bg-two {
  width: 260px;
  height: 260px;
  background: rgba(255, 138, 61, 0.2);
  right: -80px;
  top: -80px;
}

@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .auth-layout {
    grid-template-columns: 1fr;
  }

  .intro-card {
    padding: 32px 24px;
  }

  .auth-container {
    padding: 28px 20px;
  }
}

@media (max-width: 768px) {
  body {
    padding: 12px;
  }

  .intro-card {
    display: none !important;
  }

  .auth-layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .intro-card h1 {
    font-size: 2rem;
  }
}